Mechanism for cleaning coke-oven doors



Nov. 30, 1965 N. v. BALITSKY ETAL MECHANISM FOR CLEANING COKE-OVEN DOORS Filed April 18. 1961 5 Sheets-Sheet l ,1 u. WW a 1965 N. v. BALITSKY ETAL 3,

MECHANISM FOR CLEANING COKE-OVEN DOORS Filed April 18, 1961 5 Sheets-Sheet 2 Ina.-

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1 14 (H) 7 F A I I FIG-3 I 7 2 Nov. 30, 1965 N. v. BALITSKY ETAL 3 MECHANISM FOR CLEANING COKE-OVEN DOORS Filed April 18, 1961 5 Sheets-Sheet 4 NOV. 1965 N. v. BALITSKY ETAL 3,220,038

MECHANISM FOR CLEANING COKE-OVEN DOORS Filed April 18, 1961 5 Sheets-Sheet 5 United States Patent 3,220,038 MECHANISM FOR CLEANING COKE-OVEN DOORS Nicolay Vasiljevich Balitsky and Vasily Tikhonovich Tapeshkin, both of Slaviansk, U.S.S.R., assignors to Konstruktorskoje Bureau Koksohimmash Giprokoksa Filed Apr. 18, 1961, Ser. No. 103,847 Claims. (Cl. 15-21) The present invention relates to a mechanism for cleaning coke oven doors.

The present invention relates to mechanisms designed to remove graphite and tar deposits from coke oven doors over the entire perimeter of the brick Works, side surfaces of the brick lining, cutting means and sealing frame diaphragm.

Known mechanisms for cleaning coke oven doors, have a number of shortcomings. Some of these mechanisms can achieve the cleaning of the doors only on the straight sections, but cannot clean the curved sections thus requiring manual cleaning. Other mechanisms have rigidly fixed brushes and scrapers. Still others of a third construction cannot ensure thorough cleanirr'g, especially when the door is, during its fitting, either misaligned or uneven, or under or over sized.

All these shortcomings are eliminated by the construction of the present cleaning mechanism, this being achieved by attaching the brush scrapers to the carriages by means of spring mountings, and being forced into alignment with the surfaces being cleaned in correspondence with the actual position of the oven door to be cleaned.

Such design of the cleaning mechanism ensures thorough cleaning of the coke oven doors over the entire perimeter and makes possible the cleaning of doors, fit into the cleaning mechanism with the deviations from its initial position within the ranges of :65 mm. in two normally inter-crossing planes.

FIG. 1 is a side elevation of the coke oven doors cleaning mechanism.

FIG. 2 is a view along line A-A of FIG. 1.

FIG. 3 is a view along line BB of FIG. 1.

FIG 4 is a partial sectional view of the brush carriage.

FIG. 5 is a view looking in the direction of arrow D in FIG. 4.

FIG. 6 is a view looking in the direction of arrow C in FIG. 4.

The mechanism M is mounted on rollers 1 fastened on the upper service platform of the door removing machine on the side opposite the operators cab.

Movement of the cleaning mechanism to and away from the oven door is performed with the aid of electric motor 2 of the travelling mechanism. Travel limit control is carried out by a travel master switch directly coupled to travelling mechanism shaft 3.

A guide race or substantially rectangular frame 4 consists of two channel sections 4' arranged parallel to each other (FIG. 3). In the middle part of the guide race four internal detachable inserts 5 are provided to facilitate mounting of the brushes and the carriages. At the rear side guide race 4 is closed by hoods. At the front side the guide race is furnished with guards 7 to diminsh scattering of the cleaned-off deposits.

The working parts of this cleaning mechanism comprise four side cleaning double carriages 8, two lower carriages 9 and two upper carriages 10, with all such carriages having reciprocating motion on rollers along the guide and the carriages being provided with spring mounted metal Wire brushes as will later be described.

Carriages 8 and 9 are connected to one another by a non-standard chain and two spring-type compensating arrangements 11.

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In addition to the carriages, two face surface cleaning brushes 12 are fastened to the'chain links at the top part of the chain.

The reciprocating movement of the carriages is transmitted from an electric motor 13 by a worm and Worm wheel reduction gear 14, chain 15 and two chain racks 16. Tightening of the chain is carried out by tightening sprocket 17.

Drive reversal is accomplished by a travel master switch 18, while the limiting of carriage travel is controlled by limit switches 19 and bumpers 20.

The cleaning mechanism M is furnished with side rollers 21. The carriage borne brushes are pushed forward by carriage springs 22, 23 and 24.

The cleaning mechanism M is interconnected with a reduction gear 25 associated with motor 2 by lever system 26. Carriages 10 are furnished with side surface cleaning brushes 27 and face surface cleaning brushes 28. The limit of travel of the cleaning mechanism is accomplished by bumpers 29. A frame 35 is provided for each of the aforementioned carriages and is turnable about an axis 36 which is parallel to the longitudinal axis of the associated carriage.

Electric drive motor 13 transmits motion to two sprockets 30.

Travel master switch 18 is connected to the shaft of the reduction gear 14 by chains 31 and 15.

The cleaning mechanism has two modes of operation,

namely, setting up and automatic. Control of the cleaning mechanism is accomplished from the door removing machine operators cab. The door cleaning mechanism incorporates electric interlocks to coordinate its operation with the turning of the door removing machine door removing gear.

Normally the cleaning mechanism is in the extreme rear (transportation) position and is held in the vertical position by the side rollers 21 which contact guides 21 fastened to the door removing machine frame as best shown in FIG. 2.

In the free position the carriage brushes are fully advanced and turned to the initial position under the action of the springs 22, 23 and 24.

After the door removing gear makes a complete turn of degrees, together with the removed door, electric motor 2 is automatically started to move the door cleaning gear by means of the reduction gear 25 and lever system 26 into contact with the door frame. In accomplishing the above, the springs 22, 23 and 24 are compressed and the side surface cleaning brushes 27 extend over the door-brickwork securing devices and part of brick lining, while the face surface cleaning brushes 28 of the carriages enter the sealing frame diaphragm. The length of travel of the cleaning mechanism over the door is controlled by a travel master switch directly coupled to shaft 3, while the end of travel is limited by bumper 29.

As soon as the door cleaning mechanism M is brought into contact with the door frame, electric drive motor 13 is started to transmit rotary motion to drive sprockets 30 through the reduction gear 14 and chain transmission 15. Drive sprockets 30 are in engagement with the chain racks 16 fixed on the carriages. The torque of the electric drive motor is thus equally transmitted by the drive chain to the working parts at two points, to subsequently ensure smoother, jerkless operation of the mechanism during reversals.

After the carriages travel a given distance, travel master switch 18, connected by chains 31 and 15 to the low-speed shaft of the drive reduction gear 14, operates to reverse the electric drive motor 13. After the carriages and their brushes complete 10 to 12 double strokes, i.e. completely clean the door surface of graphite and tar deposits, electric drive motor 13 is automatically stopped and the carriages return to their initial extreme rear position.

If the travel masted switch 'fails to operate, stopping of the working parts is accomplished by either one of two limit switches 19, while the momentum of the working parts is absorbed by bumpers 20. The stop rails causing operation of the limit switches and brackets which bear against the bumprers are fastened to the chain racks 16.

When the working parts are stopped, the cleaning mechanism is automatically withdrawn to its initial position.

Cleaning takes about one minute.

What we claim is:

1. A cleaning mechanism for coke oven door surfaces comprising frame means having a configuration substantially conforming to the configuration of the door and capable of being moved, toward and away from the door,

a channel bar on said frame means, the'flanges of said.

channel bar extending outwardly and said channel bar constituting a continuous guideway having side portions and upper and lower portions, a plurality of wheeled carriages arranged on said guideway for movement relative to said side portions, upper portions and lower portions thereof, a frame for each carriage turnable about an axis parallel to the longitudinal axis of the carriage, a face metal wire brush and a side metal wire brush for each carriage, two levers and spring means associated with each lever pivotally mounted on said frame defining a parallelogram. each of said brushes being pivotally mounted on one of said levers, respectively, for eifecting an oscillating motion about an axis perpendicular to the axes of rotation of said levers, power transmission means connecting said carriages, drive means operably connected to the power transmission means for imparting reciprocatory movement to the carriages along said guideway, and compensating means operably connecting the carriages movable along the side portions imparting continuous pull to said transmission means thereby preventing sagging of such transmission means during movement of the frame means away from the oven.

2. The cleaning mechanism as claimed in claim 1, in which said carriages include four double unit carriages for the side portions and two carriages for each of said upper and lower portions.

3. The cleaning mechanism as claimed in claim 1 wherein said drive means includes an electric motor, reduction gear means associated therewith, chain rack means on the 4 power transmission means and gear means operably connected with said reduction gear means and meshing with said rack means.

4. The cleaning mechanism as claimed in claim 3 further including master switch means operably associated with said motor for reversing the direction of movement of said transmission means and carriages.

5. A cleaning mechanism for coke oven door surfaces comprising frame means having a configuration substantially conforming to the configuration of the door and capable of being moved toward and away from the door, means on said frame means constituting a continuous guideway having side portions and upper and lower portions, a plurality of wheeled carriages arranged on said guideway for movement relative to said side portions, upper portions and lower portions thereof, each of said carriages including a face metal wire brush, a side metal wire brush and spring means mounting each of said brushes on each carriage, power transmission means con necting said carriages, drive means operably connected to the power transmission means for imparting reciprocatory movement to the carriages along said guideway, said drive means including an electric motor, reduction gear means associated therewith, rack. means on said power transmission means along each of said side portions, gear means operably connected to said reduction gear means and meshing with each of said rack means thereby assuring a uniform distribution of stresses along the power transmission means, and compensating means operably connecting the carriages movable along the side portions imparting continuous pull to said transmission means thereby preventing sagging of such transmission means during movement of the frame means away from the oven.

References Cited by the Examiner UNITED STATES PATENTS 1,759,014 5/1930 McInTosh 15--93 2,986,758 6/ 1961 Randell et a1 15-93 FOREIGN PATENTS 741,071 11/1955 Great Britain.

856,095 12/ 1960 Great Britain.

857,780 1/ 1961 Great Britain.

83,!214 11/ 1956 Netherlands.

CHARLES A. WILLMUTH, Primary Examiner.

S. JAMES, WALTER A. SCHEEL, Examiners. 

1. A CLEANING MECHANISM FOR COKE OVEN DOOR SURFACES COMPRISING FRAME MEANS HAVING A CONFIGURATION SUBSTANTIALLY CONFORMING TO THE CONFIGURATION OF THE DOOR AND CAPABLE OF BEING MOVED, TOWARD AND AWAY FROM THE DOOR, A CHANNEL BAR ON SAID FRAME MEANS, THE FLANGES OF SAID CHANNEL BAR EXTENDING OUTWARDLY AND SAID CHANNEL BAR CONSTITUTING A CONTINUOUS GUIDEWAY HAVING SIDE PORTIONS AND UPPER AND LOWER PORTIONS, A PLURALITY OF WHEELED CARRIAGES ARRANGED ON SAID GUIDEWAY FOR MOVEMENT RELATIVE TO SAID SIDE PORTIONS, UPPER PORTIONS AND LOWER PORTIONS THEREOF, A FRAME FOR EACH CARRIAGE TURNTABLE ABOUT AN AXIS PARALLEL TO THE LONGITUDINAL AXIS OF THE CARRIAGE, A FACE METAL WIRE BRUSH AND A SIDE METAL WIRE BRUSH FOR EACH CARRIAGE, TWO LEVERS AND SPRING MEANS ASSOCIATED WITH EACH LEVER PIVOTALLY MOUNTED ON SAID FRAME DEFINING A PARALLELOGRAM. EACH OF SAID BRUSHES BEING PIVOTALLY MOUNTED ON ONE OF SAID LEVERS, RESPECTIVELY, FOR EFFECTING AN OSCILLATING MOTION ABOUT AN AXIS PERPENDICULAR TO THE AXES OF ROTATION OF SAID LEVERS, POWER TRANSMISSION MEANS CONNECTING SAID CARRIAGES, DRIVE MEANS OPERABLY CONNECTED TO THE POWER TRANSMISSION MEANS FOR IMPARTING RECIPROCATORY MOVEMENT TO THE CARRIAGES ALONG SAID GUIDEWAY, AND COMPENSATING MEANS OPERABLY CONNECTING THE CARRIAGES MOVABLE ALONG THE SIDE PORTIONS IMPARTING CONTINUOUS PULL TO SAID TRANSMISSION MEANS THEREBY PREVENTING SAGGING OF SUCH TRANSMISSION MEANS DURING MOVEMENT OF THE FRAME MEANS AWAY FROM THE OVEN. 